Poseidon, the God of the Mediterranean Sea, protector of all waters, is the brother of Zeus. After the overthrow of their Father Cronus he drew lots with Zeus and Hades, another brother, for shares of the world. His prize was to become lord of the sea. The trident is Poseidon's symbol of power e.g. his absolute control over the seas as tridents are also used for fishing, giving more emphasis to his domain power.